US11696610B2 - Protective helmet - Google Patents
Protective helmet Download PDFInfo
- Publication number
- US11696610B2 US11696610B2 US16/772,885 US201816772885A US11696610B2 US 11696610 B2 US11696610 B2 US 11696610B2 US 201816772885 A US201816772885 A US 201816772885A US 11696610 B2 US11696610 B2 US 11696610B2
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- US
- United States
- Prior art keywords
- main
- cut
- outer shell
- protective helmet
- defines
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/0406—Accessories for helmets
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/06—Impact-absorbing shells, e.g. of crash helmets
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/06—Impact-absorbing shells, e.g. of crash helmets
- A42B3/062—Impact-absorbing shells, e.g. of crash helmets with reinforcing means
- A42B3/063—Impact-absorbing shells, e.g. of crash helmets with reinforcing means using layered structures
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/30—Mounting radio sets or communication systems
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42C—MANUFACTURING OR TRIMMING HEAD COVERINGS, e.g. HATS
- A42C2/00—Manufacturing helmets by processes not otherwise provided for
- A42C2/002—In-mould forming
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
Definitions
- the present disclosure generally relates to a protective helmet as well as a method for producing a protective helmet.
- a protective helmet is required for many activities, including regularly when driving a motorcycle. Not only a protective helmet of this type with its safety-related and extensive coverage of the driver's head, but also the noise resulting from the motorcycle's engine and the road noises makes the unaided oral communication of motorcyclists difficult or impossible from a practical point of view during the journey.
- wireless radio connections and corresponding arrangements of microphones and earphones enable motorcyclists to communicate with one another, even in a relatively large group and during the journey.
- An important aspect in this respect is the maximum possible distance between the communication participants. It is obvious that, on the one hand, even relatively large distances can exist or arise between the individual motorcyclists—e.g., if the group is separated from one another by a traffic light or the like or disperses on a relatively long stretch—and that, on the other hand, the transmission power should not be arbitrarily increased. This is mainly because the corresponding devices on a motorcycle are regularly operated by batteries, which are not easy to charge on the go, and also the exposure of the driver to radio waves should not be excessively increased.
- the antenna and its positioning also play an important role in terms of the range.
- the antenna is regularly arranged on the protective helmet itself for this communication. Since the microphone and the loudspeaker are regularly mounted on the protective helmet anyway, the need to provide a separate component that would have to be held or mounted in a different way, is in this way negated.
- the arrangement on the protective helmet also enables the antenna to be effectively protected from damage.
- WO 2012/148519 A1 proposes a protective helmet having an integrated antenna, which antenna is arranged inside the outer shell.
- a partial region can be provided in the outer shell of the protective helmet, which partial region has a lower damping for radio signals because it is made of another and in this regard more suitable material.
- An improved range for the communication with the antenna can be achieved as a result of a suitable positioning of the antenna also on the inside of the outer shell, without significant compromises having to be made in terms of mechanics or otherwise. As such, an increased weight of this other material is then negligible, if the partial region is small compared to the rest of the outer shell.
- the protective helmet in at least some embodiments, which can be a motorcycle protective helmet, has an outer shell for distributing impact forces and an antenna, arranged at least partially inside the outer shell, for transmitting a radio signal, wherein the outer shell consists of a main material in a main region.
- the radio signal can be any analogue or digital signal possibly in accordance with, in principle, any communication protocol.
- the antenna can be set up to transmit and, alternatively or additionally, to emit the radio signal.
- the arrangement of the antenna at least partially inside the outer shell means that at least one part of the outer shell is arranged between the antenna and an outside of the outer shell. For example, it is possible that the antenna is surrounded by the outer shell both on the inside and on the outside.
- the inside of the outer shell is concave and corresponds to the direction towards the head of a wearer of the protective helmet.
- the outside of the outer shell is correspondingly convex.
- the main region is a part of the outer shell.
- the main material is, in principle, any material.
- the outer shell consists of a cut-out material in a cut-out region, which has a lower damping effect on the radio signal compared to the main material.
- the cut-out region is a part of the outer shell that does not overlap with the main region and can be smaller than the main region.
- the outer shell may consist of the main region and the cut-out region.
- the damping effect in the present sense is damping by means of dielectric adsorption.
- the main material can, in principle, be any material.
- the main material is a main fiber composite having a main fiber material.
- the main fiber material can be fibers from any material or fibers of any different materials.
- the main fiber composite is correspondingly, in principle, any fiber composite.
- the cut-out material consists of a secondary fiber composite.
- the secondary fiber composite can also be, in principle, any fiber composite.
- the secondary fiber composite has a secondary fiber material that is different from the main fiber material.
- the secondary fiber composite can also have a plurality of different secondary fiber material, which is possibly also distributed unevenly in regions. In these cases, the lower damping of the cut-out material can be due to the correspondingly different properties of the secondary fiber material.
- the secondary fiber material can have a lower in particular specific damping effect on the radio signal than the main fiber material. The specific damping effect in this case is the damping effect related to a volume unit of the secondary fiber material.
- the secondary fiber material has a lower dielectric adsorption than the main fiber material.
- the secondary fiber material may include glass fibers, aramid fibers and/or polyethylene fibers or consists of them.
- the secondary fiber material and, alternatively or in addition, the main fiber material can take the form of a scrim, woven fabric, knitted fabric or other textile structure.
- the protective helmet is characterised in that the main fiber composite has a main matrix material for embedding the main fiber material.
- the main matrix material can, when cured, form the main fiber composite with the main fiber material.
- the secondary fiber composite has a secondary matrix material for embedding the secondary fiber material.
- the secondary matrix material can correspondingly, when cured, form the secondary fiber composite with the secondary fiber material.
- the main matrix material and/or the secondary matrix material can comprise vinyl ester resin or consist of it.
- the main fiber material has carbon fibers.
- the main fiber material can also substantially consist of carbon fibers.
- the secondary matrix material can also be different from the main matrix material.
- the main matrix material substantially corresponds to the secondary matrix material in its composition. In this case, the same matrix material can be used for the outer shell as a whole.
- the main region and the cut-out region are integrally bonded together. In this way, mechanically disadvantageous irregularities can be effectively avoided.
- the main region and the cut-out region are integrally bonded together by the main matrix material and the secondary matrix material.
- the main region and the cut-out region are integrally bonded by means of curing the main matrix material and the secondary matrix material. As already described, these two materials can be substantially the same material.
- the main region and the cut-out region are substantially exclusively integrally bonded together along their border. This border is the border between the main region and cut-out region. In at least some embodiments, there is an even transition between the main region and the cut-out region along the border. In other words, the above transition is continuous in particular on the outside of the outer shell.
- the outer shell is molded in one piece.
- the cut-out region adjoins the main region in at least three directions on the outer shell. These three directions are among the four directions respectively perpendicular to or opposite each other on the two-dimensional plane formed by the outside or inside of the outer shell. Adjoining in exactly three directions is then, for example, the case if the cut-out region adjoins an edge of the outer shell and is otherwise completely surrounded by the main region. Even without adjoining the edge of the outer shell like this, in at least some embodiments the cut-out region is completely surrounded by the main region, in that it adjoins the main region in four directions in the above sense.
- the antenna can be arranged anywhere in relation to the outer shell.
- the antenna touches the outer shell. This means that the antenna is in contact with the outer shell.
- the antenna may touch the cut-out region. In this way, the low damping effect of the cut-out region comes into effect effectively.
- the antenna is arranged in a bag-like pocket of the outer shell.
- the antenna is attached to an inside of the outer shell.
- the antenna cannot touch the outer shell at all, in a partial section or even only at certain points.
- the antenna extends substantially completely along one extension region/portion of the outer shell. In other words, the antenna as a whole is in contact with the outer shell.
- the region of the outer shell in contact with the antenna is the extension region.
- the extension region is substantially completely surrounded by the cut-out region.
- a safety distance from the main region/portion can be provided.
- the extension region maintains a minimum distance from the main region, which is in at least some embodiments at least 10 mm.
- An antenna regularly has a mirror-symmetrical radiation pattern, such that two opposite radiation directions emanating from the antenna are regularly particularly relevant in terms of damping. If the antenna is positioned accordingly on the outer shell, it is not just the region of the outer shell directly adjoining the antenna, but also the opposite region, relative to a center of the protective helmet, that is relevant.
- the outer shell is designed concave for partially enclosing the head of a wearer of the protective helmet, such that said shell defines a center point in accordance with a center of the head, in that a point reflection of at least one part of the cut-out region defines a mirror region about the center point and in that a mirror region radio path, starting from the antenna and leading through the mirror region, of the radio signal has a lower damping than a main region radio path, leading through the main region, of the radio signal.
- the region opposite the antenna also has a reduced damping.
- mirror region radio path originates from the antenna merely defines the course of the mirror region radio path and does not restrict the direction of the radio signals—corresponding to a transmission from the antenna or reception by the antenna—to this path.
- the mirror region overlaps an opening region of the outer shell.
- the opening region can, for example, be the visor opening or the head opening for putting on the helmet.
- the cut-out region overlaps with the mirror region.
- at least one part of the mirror region also consists of the cut-out region.
- the cut-out region has several parts, that a first contiguous cut-out partial region comprises the extension region, that a second contiguous cut-out partial region overlaps with the mirror region and that the main region separates the first and the second contiguous cut-out regions from one another. In other words, there are two non-contiguous partial regions of the cut-out region.
- the protective helmet has an inner layer accommodated by the outer shell for damping impact forces. In at least some embodiments, at least one part of the outer shell is arranged between the antenna and the inner layer.
- the antenna can have any shape or design. However, in at least some embodiments the antenna has a larger expansion along a longitudinal direction than along a transverse direction running transverse to the longitudinal direction. In other words, the antenna is elongated. In at least some embodiments, the antenna is arranged such that the longitudinal direction is oriented substantially vertically.
- the antenna is arranged on the outer shell substantially centrally relative to an outer shell transverse direction, which outer shell transverse direction is defined by a left and a right lateral direction of a wearer of the protective helmet.
- the protective helmet has a transmission line for coupling the antenna to a communication device.
- the protective helmet has a slot for the in particular interchangeable accommodation of the communication device and this slot has a contact arrangement for connecting the communication device with the transmission line.
- the protective helmet has a connection arrangement for connecting an external contact to the transmission line.
- the communication arrangement is not arranged on the protective helmet, but rather an electrical connection, e.g., by means of a cable, is merely established with the transmission line.
- the communication device is a digital communication device such as a Bluetooth communication device.
- the antenna is set up to transmit digital radio signals, wherein these can be Bluetooth radio signals.
- a main fiber material for forming a main fiber composite in a main region of the outer shell is arranged in a molding device for molding the outer shell.
- the main fiber material is arranged in the molding device for molding the outer shell such that it forms a main fiber composite in the main region of the outer shell.
- a main matrix material surrounding the main fiber material is further cured for embedding the main fiber material, wherein a cut-out region of the outer shell is formed from a cut-out material, wherein an antenna for transmitting a radio signal is arranged at least partially inside the outer shell and wherein the cut-out material has a lower damping effect on the radio signal compared to the main fiber composite.
- the cut-out material has a secondary fiber material, wherein the secondary fiber material is arranged in the molding device together with the main fiber material.
- a secondary matrix material surrounding the secondary fiber material is cured for embedding the secondary fiber material, wherein this may occur substantially at the same time as the main fiber material is cured.
- the secondary matrix material together with the secondary fiber material forms a secondary fiber composite.
- the secondary matrix material has substantially the same composition as the main matrix material.
- FIG. 1 shows a schematic exploded view of an exemplary embodiment of a proposed protective helmet
- FIG. 2 shows a schematic side view of the protective helmet of FIG. 1 .
- the protective helmet shown in FIG. 1 is a motorcycle protective helmet. It has an outer shell 1 , which is especially represented in an exploded view in FIG. 1 .
- the protective helmet also has an antenna 2 , which is set up here for a Bluetooth communication and is especially connected for this purpose by means of a transmission line 3 having a contact arrangement of a slot 4 for accommodating a communication device (not illustrated separately here).
- the communication device sends and receives radio signals by means of the antenna 2 .
- the outer shell 1 consists of a main material, which is a fiber composite having carbon fibers as fiber material and vinyl ester resin as matrix material. This main material can also be designated a main fiber composite.
- the outer shell 1 consists of a cut-out material which here consists of a further fiber composite, which comprises glass fibers as fiber material and likewise vinyl ester resin as matrix material.
- This further fiber composite can also be designated a secondary fiber composite.
- the use of glass fibers leads to the damping effect of the secondary fiber composite on the radio signals being lower than the damping effect of the main fiber composite.
- the damping effect of the cut-out region 6 is therefore lower than that of the main region 5 .
- the vinyl ester resin is the same for the main region 5 and the cut-out region 6 .
- the carbon fibers and the glass fibers were respectively inserted into the corresponding molding device as scrim in accordance with the desired arrangement of the cut-out region 6 .
- an exclusively bonded connection was created between the cut-out region 6 and the main region 5 by means of the vinyl ester resin along the border 7 between the cut-out region 6 and the main region 5 .
- the main region 5 surrounds the cut-out region 6 completely.
- the cut-out region 6 could extend as far as the lower edge 8 of the outer shell 1 .
- the antenna 2 is elongated and extends longitudinally along the cut-out region 6 .
- a corresponding longitudinal direction 16 as well as a transverse direction 17 running transverse to the longitudinal direction 16 are illustrated in FIG. 1 .
- the corresponding contact surface of the antenna 2 defines an extension region 9 indicated in FIG. 1 , which lies completely within the cut-out region 6 and has a distance from the main region 5 .
- the present arrangement of the antenna 2 leads to a substantially vertical orientation, when the protective helmet is worn.
- the radiation pattern of the antenna 2 is such that a first main direction passes through the cut-out region 6 substantially perpendicular to the outer shell 1 .
- the second main direction of the antenna 2 extends exactly opposite. This fact is illustrated in more detail in FIG. 2 .
- the outer shell 1 defines a center point 10 in accordance with the center of the head of a wearer of the protective helmet.
- a mirror region 11 (only shown here in side view) is defined by a point reflection of the cut-out region 6 .
- a radio path of the radio signal starting from the antenna 2 and leading through this mirror region 11 defines a mirror region radio path 12 . It has a lower damping of the radio signal than the main region radio path 13 likewise illustrated in FIG. 2 , which leads through the main region 5 starting from the antenna 2 .
- the mirror region 11 is arranged in the visor opening and because of this opening there is no damping by the outer shell 1 along the mirror region radio path 12 .
- the damping by the visor 19 is considerably lower.
- the mirror region 11 therefore overlaps with an opening region 14 formed by the visor opening.
- the outer shell 1 in the mirror region 11 also consists of a material that has a lower damping effect compared to the main material of the main region 5 .
- the mirror region 11 would thus also be in the cut-out region 6 , wherein the cut-out region 6 can also consist of a plurality of partial regions possibly not connected to one another.
- the protective helmet shown in FIGS. 1 and 2 also has an inner layer 15 for damping impact forces, which consists of expanded polystyrene (EPS) in the present case.
- EPS expanded polystyrene
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Helmets And Other Head Coverings (AREA)
Abstract
Description
Claims (19)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017130109.7 | 2017-12-15 | ||
DE102017130109 | 2017-12-15 | ||
DE102017130373.1A DE102017130373A1 (en) | 2017-12-15 | 2017-12-18 | helmet |
DE102017130373.1 | 2017-12-18 | ||
PCT/EP2018/084594 WO2019115629A1 (en) | 2017-12-15 | 2018-12-12 | Protective helmet |
Publications (2)
Publication Number | Publication Date |
---|---|
US20200305532A1 US20200305532A1 (en) | 2020-10-01 |
US11696610B2 true US11696610B2 (en) | 2023-07-11 |
Family
ID=66674552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/772,885 Active US11696610B2 (en) | 2017-12-15 | 2018-12-12 | Protective helmet |
Country Status (6)
Country | Link |
---|---|
US (1) | US11696610B2 (en) |
EP (1) | EP3723531B1 (en) |
CN (1) | CN111836561B (en) |
DE (1) | DE102017130373A1 (en) |
ES (1) | ES2914794T3 (en) |
WO (1) | WO2019115629A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016115897A1 (en) | 2016-08-26 | 2018-03-01 | Schuberth Gmbh | helmet |
DE102018103657A1 (en) | 2018-02-19 | 2019-08-22 | Schuberth Gmbh | helmet |
DE102018004314A1 (en) | 2018-05-30 | 2019-12-05 | Schuberth Gmbh | helmet |
USD1005600S1 (en) * | 2021-02-17 | 2023-11-21 | Hjc Corp. | Helmet |
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EP3723531B1 (en) | 2022-03-09 |
US20200305532A1 (en) | 2020-10-01 |
WO2019115629A1 (en) | 2019-06-20 |
DE102017130373A1 (en) | 2019-06-19 |
CN111836561A (en) | 2020-10-27 |
ES2914794T3 (en) | 2022-06-16 |
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EP3723531A1 (en) | 2020-10-21 |
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